CN101341609A - No-welding type battery pack using forced-inserting type rivet - Google Patents
No-welding type battery pack using forced-inserting type rivet Download PDFInfo
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- CN101341609A CN101341609A CNA2006800484770A CN200680048477A CN101341609A CN 101341609 A CN101341609 A CN 101341609A CN A2006800484770 A CNA2006800484770 A CN A2006800484770A CN 200680048477 A CN200680048477 A CN 200680048477A CN 101341609 A CN101341609 A CN 101341609A
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- rivet
- base plate
- pcm
- hole
- cover body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure prismatic or rectangular
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Disclosed herein is a no-welding type battery pack using one or more forced-inserting type rivets. A cap assembly includes a base plate mounted to an open upper end of a battery case, a protection circuit module (PCM) mounted on the base plate, and a top cap coupled to the upper end of the battery case while the top cap covers the PCM. The top cap is made of an insulative material. The electrical connection and the mechanical coupling between the PCM and the base plate are accomplished by one or more forced-inserting type rivets. The cap assembly is included in the battery pack. The no-welding type battery pack using the one or more forced-inserting type rivets is manufactured without welding or soldering requiring an excessive amount of time and skilled technique during the electrical connection between the battery cell and the PCM. As a result, the assembly process of the battery pack is simplified, and therefore, the manufacturing time of the battery pack is reduced. Consequently, the manufacturing costs of the battery pack are decreased, the automation of the assembly process is accomplished, and the structural stability of the battery pack is improved.
Description
Technical field
The present invention relates to a kind of non-weldering type battery pack of using one or more press-fit rivets; more particularly; relate to a kind of cover body assembly; it comprises the base plate of the open upper end that is installed to battery container; be installed in the protective circuit module (PCM) on the base plate; and overhead guard; when overhead guard is covered in PCM; overhead guard combines with the battery container upper end; and overhead guard is made by insulating material; wherein finish being electrically connected and mechanical connection between described PCM and the described base plate, also relate to the battery pack that comprises described cover body assembly by one or more press-fit rivets.
Background technology
Along with the continuous development of mobile device, the demand of this mobile device and secondary cell is also increased sharply.When a kind of secondary cell is lithium secondary battery,, therefore be widely used as the energy of various electronic products and various mobile devices at present because it has high-energy-density, high operation voltage and characteristics such as good storage and useful life.
Yet, in lithium secondary battery, have various inflammable substances.Given this point, in the use of lithium secondary battery may because of overcharge, overcurrent or other external bump cause danger such as heating or blast.In other words, the fail safe of lithium secondary battery is very low.Therefore, a kind of protective circuit module (PCM) that is used for controlling effectively battery abnormality (as overcharging) is installed on lithium secondary battery, PCM is connected with the battery unit of lithium secondary battery.
PCM comprises the field-effect transistor (FET), voltage detector of the switch element that serves as Control current and such as passive components such as resistor and capacitors.PCM can stop the overcharging of battery, overdischarge, overcurrent, short circuit and reverse voltage etc., thereby prevent battery explosion or overheated, liquid is from the decay of battery seepage and battery charge, discharge capability, and the electrical efficiency that suppresses battery reduces and the physical chemistry abnormal behavior of battery, therefore, can get rid of the hazards of battery and prolong useful life of battery.
In general, PCM is connected with battery unit by melting welding or brazing mode via electric conducting material (as the nickel plate).Specifically, the nickel plate is connected with the electrode tap of PCM by welding or welding mode, and the nickel plate is connected with the electrode tip of battery unit by melting welding or brazing mode afterwards.Adopt this mode, thereby PCM links to each other with battery unit and produces battery pack.
In this case, need a plurality of melting welding or soldering step to construct battery pack, and because the small-sized thereby accuracy need be very high of secondary cell is carried out melting welding or soldering step.Therefore, cause the possibility of defective also very high.In addition, Fu Jia melting welding or soldering step also can cause the manufacturing cost of battery pack to increase.
Therefore, need badly at present and a kind ofly do not need by spot welding or soldering and PCM is assembled into the method for battery unit.
Summary of the invention
Therefore, propose the present invention and solve foregoing problems and other still unsolved technical problem.
Specifically; main purpose of the present invention is to provide a kind of cover body assembly; described cover body assembly can make protective circuit module (PCM) be electrically connected to battery unit under the situation that does not adopt the melting welding that requires too much time and knack or soldering processes; for this reason; simplify the assembling process of battery pack, also reduced the manufacturing time of battery pack.Therefore, reduce the manufacturing cost of battery pack, realized the automation of assembling process.
Another object of the present invention is to provide a kind of battery pack that comprises described cover body assembly, improve the structural stability of battery pack thus.
According to an aspect of the present invention, can realize above-mentioned and other purpose by providing as the lower cover assembly, described cover body assembly comprises: base plate, and it is installed on the open upper end of battery container; PCM, it is installed on the described base plate; And overhead guard, it links to each other with the upper end of described battery container when covering described PCM, and described overhead guard made by insulating material, wherein, finishes being electrically connected and mechanical connection between described PCM and the described base plate by one or more press-fit rivets.
Therefore, adopt, can use rivet to finish being electrically connected and mechanical connection between PCM and the base plate according to cover body assembly of the present invention.Therefore, can reduce the manufacturing cost of battery pack, simplify the number of assembling steps of battery pack, and eliminate the problem that causes by melting welding or soldering.
" press-fit connection " of the present invention is meant by applying powerful external force and makes protruding end the being forced to property ground insertion of the plate of winning be formed at the connection that the manhole in second plate is finished to first plate with cylinder protruding end, and wherein the internal diameter of the through hole of second plate is substantially equal to or is slightly less than the external diameter of the cylinder protruding end of first plate.
In a preferred embodiment, described PCM and described base plate are provided with two and are connected to the negative electrode of battery and the through hole of anode, and in the time of on described PCM places described base plate, described rivet passes corresponding through hole, thereby finishes being electrically connected and mechanical connection between PCM and the base plate.
One of described rivet (rivet (A)) comprises cylinder and has the plate body of predetermined thickness, described plate body is formed at described cylindrical centre, make that described rivet (A) is used for described PCM and described base plate are spaced apart from each other with preset distance, and rivet (A) constitutes the protruding end that is positioned on the base plate, and another rivet (rivet (B)) comprises plate-shaped upper end and cylinder.
Preferably, described cover body assembly further comprises liner, it is installed on the through hole (a) that rivet in the described base plate (A) passes and locates, and make described liner cover the upper surface of described through hole (a), lower surface and inner peripheral surface, and described liner is made by insulating material.Further preferably, described cover body assembly further comprises conductive plate, the opening that it is installed on the lower end of described liner and has the electrode tip that is connected to battery unit, and described opening is passed in the lower end of described rivet (A).Based on the said structure of cover body assembly, when rivet (A) was between base plate and PCM, except the specific region of conductive plate and PCM, rivet (A) was by liner and by electric insulation.In more detail, when rivet (A) insulated by liner, rivet (A) constituted the last protruding end as cathode terminal or anode tap on the base plate.Last protruding end is used as and base plate electrode of opposite, i.e. anode tap or cathode terminal.
In said structure, described rivet (A) has enough length can pass described PCM, described base plate, described liner and described conductive plate successively, and is pressed against the upper surface of described PCM and the lower surface of described conductive plate.
Preferably, be provided with recess around the through hole (a) that described base plate passes at rivet (A), the plate body of described rivet (A) is placed in the described recess, and be provided with recess around the through hole (b) that PCM passes at rivet (B), the plate-shaped upper end of described rivet (B) is placed in the described recess.Preferably, the size of recess (a) is corresponding with the size of liner, so that the plate body of rivet (A) can be positioned in the recess (a) by liner.
Described liner can comprise two members that are incorporated into the upper surface and the lower surface of described base plate, or described liner is by embedding the ejection formation structure that forms as one.
According to circumstances, when PCM placed base plate, three rivets can pass described through hole, to finish being electrically connected and mechanical connection between described PCM and the described base plate.First rivet passes the through hole (Pa) of described PCM and the through hole (Ba) of described base plate, and the 3rd rivet combines with the upper end of second rivet by the through hole (Pb) of described PCM.Described first rivet comprises plate-shaped upper end and cylinder, and described second rivet comprises plate-shaped upper end and cylinder, and described second rivet comprises plate-shaped upper end and cylinder.Be formed with and the corresponding combined hole of the cylinder of the 3rd rivet in the upper end of second rivet, make the 3rd rivet to combine with the upper end of second rivet by being press-fitted (forced-inserting) mode.
In another preferred embodiment, described PCM has two through holes of the negative electrode that is connected to battery respectively and anode (a, b), and described base plate is provided with respectively and corresponding combination member of the through hole of described PCM and through hole (c).When described PCM placed on the described base plate, described combination member passed described through hole (a), and rivet passes described through hole (b) and described through hole (c), finished being electrically connected and mechanical connection between PCM and the base plate thus.
Described rivet comprises cylinder and has the plate body of predetermined thickness, described plate body is formed at described cylindrical centre, make that described rivet is used for described PCM and described base plate are spaced apart from each other with preset distance, and rivet constitutes the protruding end that is positioned on the base plate.Described combination member is the cylindrical member that protrudes from base plate, and the spacing the during through hole (c) of the length of protrusion and through hole (b) that passes PCM when rivet and base plate between PCM and the base plate is corresponding.
According to a further aspect in the invention, provide a kind of battery pack, it comprises the cover body assembly with said structure.Make battery pack by the open upper end that the cover body assembly is attached to the battery container with electrode assemblie, the described electrode assemblie that constitutes with cathode/separator is installed in the described battery case.Preferably, battery pack comprises prismatic battery, and this prismatic battery has the electrode assemblie that is installed in the prismatic metal battery container.
Description of drawings
Can more be expressly understood above-mentioned and other purpose, feature and other advantage of the present invention by detailed description below in conjunction with accompanying drawing, wherein:
Fig. 1 is the decomposition diagram that illustrates according to the cover body assembly of first preferred embodiment of the invention.
Fig. 2 is for after being illustrated in protective circuit module (PCM) and base plate being combined by rivet, and this bonded block is installed to the perspective view of the cover body assembly shown in Figure 1 before the overhead guard.
Fig. 3 is the decomposition diagram according to the cover body assembly of second preferred embodiment of the invention.
Fig. 4 is for after being illustrated in PCM and base plate being combined by rivet, and this bonded block is installed to the perspective view of the cover body assembly shown in Figure 3 before the overhead guard.
Fig. 5 is the decomposition diagram according to the cover body assembly of third preferred embodiment of the invention.
Fig. 6 is that this bonded block is installed to the perspective view of the cover body assembly shown in Figure 5 before the overhead guard after being illustrated in PCM and base plate and being combined by the combination member of rivet and base plate.
Embodiment
Describe the preferred embodiments of the present invention in detail referring now to accompanying drawing.Yet, it should be noted that protection scope of the present invention is not limited to illustrated embodiment.
Fig. 1 is the decomposition diagram that illustrates according to the cover body assembly of first preferred embodiment of the invention.
With reference to Fig. 1; cover body assembly 100 comprises base plate 110, protective circuit module (PCM) 120 and overhead guard 130; base plate 110 is installed in the open upper end of battery container (not shown); protective circuit module (PCM) 120 is installed on the base plate 110; when overhead guard 130 was covered in PCM 120, overhead guard 130 combined with the upper end of battery container.Overhead guard 130 is made by insulating material.
The rivet 140 that links to each other with the anode of battery is used for base plate 110 is spaced apart from each other with PCM 120.And rivet 140 constitutes the protruding end that is positioned on the base plate 110.The plate body 142 that rivet 140 comprises cylinder 141a, 141b and has predetermined thickness, plate body 142 is between cylinder 141a and 141b.The last cylinder 141a of rivet 140 passes through hole 124, and the following cylinder 141b of rivet 140 passes through hole 114.
On the other hand, the rivet 150 that links to each other with the negative electrode of battery comprises cylinder 151 and plate-shaped upper end 152.The cylinder 151 of rivet 150 passes through hole 125 and through hole 115 successively.
Pass at rivet 140 before the through hole 114 of base plate 110, insulating cell is installed on through hole 114 places.Described liner comprises liner 161 and lower liner 162.Last liner 161 and lower liner 162 are installed on through hole 114 in the mode that it covers upper surface, lower surface and the inner peripheral surface of through hole 114.
The lower end of lower liner 162 is equipped with conductive plate 170.Conductive plate 170 provides the zone that is connected with the anode tap (not shown) of battery by welding.Conductive plate 170 is provided with opening 174, and opening 174 is passed in the lower end of rivet 140.
Be formed with recess 112 around the through hole 114 of base plate 110, when rivet 140 passed through hole 114 via last liner 161 and lower liner 162, the plate body 142 of rivet 140 was positioned in this recess 112.And the through hole that will pass rivet 150 125 of PCM 120 around also be formed with recess 122, the plate-shaped upper end 152 of rivet 150 is positioned in this recess 122.
Below, the assembling process of cover body assembly 100 is described with reference to Fig. 1 and Fig. 2.
Then, the last cylinder 141a of rivet 140 is passed the center through hole 124 of PCM 120.The last cylinder 141a of rivet 140 has following length equally, even cylinder 141a is enough to partly protrude from the through hole 124 of PCM 120 on during the proper last cylinder 141a that inserts rivet 140 as mentioned above.Therefore, can push the last protruding end of rivet 140, thereby finish combining between rivet 140 and the PCM 120.
At last, the cylinder 151 with rivet 150 passes the side through-hole 125 of PCM 120 and the side through-hole 115 of base plate 110 successively.The cylinder 151 of rivet 150 has following length,, makes that cylinder 151 is enough to partly protrude from the through hole 115 of base plate 110 when inserting the cylinder 151 of rivet 150 as mentioned above that is.Therefore, can push the following protruding end of rivet 150, thereby finish combining between rivet 150 and the base plate 110.
When the mechanical connection finished between PCM 120 and the base plate 110, base plate 110 is arranged at the open upper end of battery container (not shown), then with welding manner base plate 110 is combined with battery container again.Afterwards, overhead guard 130 is installed in the upper end of battery container.Yet, use rivet 140 and rivet 150 to realize that the mechanical connection between PCM 120 and the base plate 110 is not limited to above-mentioned method of attachment.In other words, can finish mechanical connection between PCM 120 and the base plate 110 in a different manner.
By aforementioned number of assembling steps, as base plate 110 and PCM 120 each other mechanical connection the time, base plate 110 and PCM 120 be owing to the plate body 142 of intervenient rivet 140 preset distance that is spaced apart from each other, and realize being electrically connected between base plates 110 and the PCM 120 by rivet 140 and rivet 150.
Fig. 3 is the decomposition diagram according to the cover body assembly of second preferred embodiment of the invention.
With reference to figure 3, cover body assembly 200 comprises base plate 210, PCM 220 and overhead guard 230, and base plate 210 is installed on the open upper end (not shown) of battery container, and PCM 220 is installed on the base plate 210, when overhead guard 230 covered on the PCM 220, overhead guard 230 can link to each other with the upper end of battery container.Wherein, overhead guard 230 is made by insulating material.
The structure that hereinafter will describe rivet 240,250 and 260 in more detail be connected.
The cylinder 252 that last liner 270 comprises upper end 271 and has cylinder 272, the second rivets 250 of patchhole (B) 275 passes patchhole 275.Patchhole 275 is communicated with upper end 271.Be formed with the upper end 251 corresponding groove 275a with second rivet 250 in the upper end of last liner 270, thereby guarantee more stable electric insulation.Lower liner 273 is used for making base plate 210 and conductive plate 280 to be isolated from each other.Therefore, the size of lower liner 273 is greater than conductive plate 280.Last liner 270 and lower liner 273 combine each other with following structure, that is, the cylinder 272 of last liner 270 passes the patchhole 274 of lower liner 273.
In addition, plate-shaped upper end 251 at second rivet 250 is formed with combined hole 256, its internal diameter is substantially equal to or is slightly less than the external diameter of the cylinder 262 of the 3rd rivet 260, makes second rivet 250 combine in the mode that is press-fitted (forced-inserting) with the 3rd rivet 260.Therefore, when the 3rd rivet 260 places the upper end of second rivet 250 and press in the 3rd rivet 260, just insert in the combined hole 256 of second rivet 250 on being forced to property ground the lower end of the cylinder 262 of the 3rd rivet 260, so just finished the combination between second rivet 250 and the 3rd rivet 260.
The 3rd rivet 260 comprises plate-shaped upper end 261 and cylinder 262.The 3rd rivet 260 is connected to the anode of battery container via second rivet 250.The 3rd rivet 260 passes the through hole (Pb) 226 of PCM 220, and being forced to property ground inserts in the combined hole 256 of second rivet 250 as mentioned above.Be formed with the plate-shaped upper end 261 corresponding recess 226a with the 3rd rivet 260 around the through hole that will pass the 3rd rivet 260 226 of PCM 220, thereby the 3rd rivet 260 more firmly is installed on the PCM 220.
Hereinafter the assembling process of cover body assembly 200 will be described with reference to figure 3 and Fig. 4.
Subsequently, PCM 220 is placed on the base plate 210, the center through hole 226 of PCM 220 and the combined hole 256 of second rivet 250 are communicated with, then cylinder 262 the being forced to property of the 3rd rivet 260 ground inserts in the combined hole 256 of second rivet 250.
At last, the cylinder 242 of first rivet 240 passes in the side through hole 214 of the side through hole 224 of PCM 220 and base plate 210 successively.The cylinder 242 of first rivet 240 has following length,, makes that cylinder 242 is enough to partly protrude from the side through hole 214 of base plate 210 when inserting the cylinder 242 of first rivet 240 as mentioned above that is.Therefore, can push the following protruding end of first rivet 240, thereby finish combining between first rivet 240 and the base plate 210.
When finishing the mechanical connection of PCM 220 and base plate 210, base plate 210 is placed the open upper end of battery container (not shown), then again with welding manner with base plate 210 and battery container combination.Afterwards, overhead guard 230 is installed in the upper end of battery container.Yet the mechanical connection that utilizes rivet 240, rivet 250 and rivet 260 to finish between PCM 220 and the base plate 210 is not limited to above-mentioned method of attachment.In other words, can finish mechanical connection between PCM 220 and the base plate 210 in a different manner.
Via aforesaid number of assembling steps, as base plate 210 and PCM 220 each other mechanical connection the time, base plate 210 and PCM 220 be owing to the plate-shaped upper end 251 of intervenient second rivet 250 preset distance that is spaced apart from each other, and realize being electrically connected between base plates 210 and the PCM 220 by rivet 240,250 and 260.
Fig. 5 is the decomposition diagram according to the cover body assembly of third preferred embodiment of the invention.
With reference to figure 5, cover body assembly 300 comprises base plate 310, PCM 320 and overhead guard 330, and base plate 310 is installed on the open upper end of battery container (not shown), and PCM 320 is installed on the base plate 310, when overhead guard 330 covered on the PCM 320, overhead guard 330 linked to each other with the upper end of battery.Wherein, overhead guard 330 is made by insulating material.
Therefore, in the time of on PCM 320 is positioned over base plate 310, combination member 312 passes through hole 322, and rivet 340 passes through hole 324 and 314, thereby finishes being electrically connected and mechanical connection of base plate 310 and 320 of PCM.
The rivet 340 that is connected to galvanic anode (more particularly, being connected to the electrode assemblie (not shown)) is used for base plate 310 is spaced apart from each other with PCM 320.And rivet 340 constitutes the protruding end that is arranged on the base plate 310.Rivet 340 comprises cylinder 341a and 341b and the plate body 342 with predetermined thickness, and plate body 342 is between the centre of cylinder 341a and 341b.The last cylinder 341a of rivet 340 passes the through hole 324 of PCM 320, and the following cylinder 341b of rivet 340 passes the through hole 314 of base plate 310.
On the other hand, the length of the combination member that is connected to the electrode assemblie negative electrode 312 protrusions of base plate 310 is corresponding with PCM 320 and the spacing between the base plate 310 that the plate body 342 of rivet 340 is limited.The combination member 312 of base plate 310 is shaped as cylindric, makes the combination member 312 can be corresponding to the through hole 322 of PCM 320.
Pass at rivet 340 before the through hole 314 of base plate 310, earlier insulating cell is installed on through hole 314.Liner comprises liner 350 and lower liner 353.Last liner 350 comprises cylinder 351 and upper end 352, cylinder 351 is arranged on the upper end of base plate and inserts the through hole 314 of base plate 310, make cylinder 351 cover the inner peripheral surface of through hole 314, upper end 352 forms platy structure to cover the upper surface of through hole 314.On the other hand, lower liner 353 is arranged at the lower end of base plate 310.Lower liner 352 forms platy structure to cover the lower surface of through hole (c) 314.When the cylinder 352 of last liner 350 and upper end 351 formed patchhole 354 vertically, the following cylinder 341b of rivet 340 passed this patchhole 354.
The lower end of lower liner 353 is equipped with conductive plate 360.Conductive plate 360 provides the zone that links to each other with the anode tap of electrode assemblie by welding manner.Conductive plate 360 is provided with opening 364, and this opening is passed in the lower end of rivet 340.The lower liner 353 that is installed to base plate 310 lower ends has the size bigger than conductive plate 360, contacts with conductive plate 360 to prevent base plate 310.Alternatively, lower liner 353 can form the upper surface of covering conductive plate 360 and the structure of side.
Be formed with recess 315 around the through hole 314 of base plate 310, when rivet 340 passed through hole 314, the plate body 342 of rivet 340 was positioned in this recess.Rivet 340 can pass the through hole 314 of base plate 310 by last liner 350.For this reason, the size of the recess 315 of base plate 310 is corresponding with the size of last liner 350.The top of last liner 350 is formed with recess 355, and the plate body 342 of rivet 340 is positioned in this recess 355.
Hereinafter the assembling process of cover body assembly 300 will be described with reference to figure 5 and Fig. 6.
Then, the center through hole 324 that makes the last cylinder 341a of rivet 340 pass PCM 320.The last cylinder 341a of rivet 340 has following length equally, even cylinder 341a is enough to partly protrude from the through hole 324 of PCM 320 on during the proper last cylinder 341a that inserts rivet 340 as mentioned above.Therefore, can push the last protruding end of rivet 340, thereby finish combining between rivet 340 and the PCM 320.
When rivet 340 passed the center through hole 314 of the center through hole 324 of PCM 320 and base plate 310 as previously mentioned, the binding member 312 that protrudes from a sidepiece of base plate 310 passed the side through hole 322 of PCM320.
The combination member 312 of base plate 310 has following length,, makes that combination member 312 is enough to partly protrude from the through hole 322 of PCM 320 when combination member 312 passes the through hole 322 of PCM 320 as mentioned above that is.Therefore, can push the protrusion lower end of rivet 150, thereby finish combining between combination member 312 and the PCM 320.
When the mechanical connection finished between PCM 320 and the base plate 310, base plate 310 is placed the open upper end of battery container (not shown), then with welding manner base plate 310 is combined with battery container again.Afterwards, overhead guard 330 is installed in the upper end of battery container.Yet, utilize rivet 340 and combination member 312 to realize that the mechanical connection between PCM 320 and the base plate 310 is not limited to above-mentioned method of attachment.In other words, can finish mechanical connection between PCM 320 and the base plate 310 in a different manner.
Via aforesaid number of assembling steps, as base plate 310 and PCM 320 each other mechanical connection the time, base plate 310 with PCM 320 because the plate body 342 of intervenient rivet 340 is spaced apart from each other predetermined distance, and finish being electrically connected between base plate 310 and the PCM 320 by rivet 340 and from the combination member 312 of base plate 310 protrusions.
Though disclose the preferred embodiments of the present invention for convenience of description, those skilled in the art will recognize that and under the situation that does not depart from the disclosed scope and spirit of the present invention of claims, can carry out various modifications, increase and alternative.
Industrial applicibility
It is evident that from above description, can make and use one or more press-fit rivetings The non-weldering type battery pack of nail did not require thereby need not adopt when being electrically connected battery container and PCM The melting welding of many times and knack or soldering processes. For this reason, simplified the assembling of battery pack Journey has also reduced the manufacturing time of battery pack. Therefore, reduced the manufacturing cost of battery pack, Realize the automation of assembling process, and improved the structural stability of battery pack.
Claims (16)
1. cover body assembly comprises:
Base plate, it is installed on the open upper end of battery container;
Protective circuit module (PCM), it is installed on the described base plate; And
Overhead guard, it links to each other with the upper end of described battery container when covering described PCM, and described overhead guard made by insulating material,
Wherein, finish being electrically connected and mechanical connection between described PCM and the described base plate by one or more press-fit rivets.
2. cover body assembly as claimed in claim 1, wherein said PCM and described base plate are provided with two and are connected to the negative electrode of battery and the through hole of anode, and when described PCM placed on the described base plate, described rivet passed corresponding through hole.
3. cover body assembly as claimed in claim 1, one of wherein said rivet (rivet (A)) comprises cylinder and has the plate body of predetermined thickness, described plate body is formed at described cylindrical centre, make that described rivet (A) is used for described PCM and described base plate are spaced apart from each other with preset distance, and rivet (A) constitutes the protruding end that is positioned on the base plate.
4. cover body assembly as claimed in claim 1, one of wherein said rivet (rivet (B)) comprises plate-shaped upper end and cylinder.
5. cover body assembly as claimed in claim 3 further comprises:
Liner, it is installed on the through hole (a) that rivet in the described base plate (A) passes and locates, and make described liner cover the upper surface of described through hole (a), lower surface and inner peripheral surface, and described liner is made by insulating material.
6. cover body assembly as claimed in claim 5 further comprises:
Conductive plate, the opening that it is installed on the lower end of described liner and has the electrode tip that is connected to battery unit, described opening is passed in the lower end of described rivet (A).
7. cover body assembly as claimed in claim 6, wherein said rivet (A) has enough length can pass described PCM, described base plate, described liner and described conductive plate successively, and is pressed against the upper surface of described PCM and the lower surface of described conductive plate.
8. be provided with recess around the through hole (a) that cover body assembly as claimed in claim 3, wherein said base plate pass at rivet (A), the plate body of described rivet (A) is placed in the described recess.
9. cover body assembly as claimed in claim 5, wherein said liner comprise two members that are incorporated into the upper surface and the lower surface of described base plate, or described liner is by embedding the ejection formation structure that forms as one.
10. cover body assembly as claimed in claim 2, wherein
Three rivets pass described through hole, finishing being electrically connected and mechanical connection between described PCM and the described base plate, and
Wherein first rivet passes the through hole (Pa) of described PCM and the through hole (Ba) of described base plate, and the 3rd rivet combines with the upper end of second rivet by the through hole (Pb) of described PCM.
11. cover body assembly as claimed in claim 10, wherein said second rivet comprises plate-shaped upper end and cylinder, and described the 3rd rivet combines with the upper end of second rivet by the mode that is press-fitted.
12. cover body assembly as claimed in claim 10, wherein said second rivet is provided with combined hole in the top, the internal diameter of described combined hole is substantially equal to or is slightly less than the cylindrical external diameter of described the 3rd rivet, when the cylindrical lower end of described the 3rd rivet is positioned at the combined hole of described second rivet, make cylindrical lower end the being forced to property ground of described the 3rd rivet insert the combined hole of described second rivet by apply powerful external force to the 3rd rivet, thereby finish combining between second rivet and the 3rd rivet.
13. cover body assembly as claimed in claim 1, wherein
Described PCM have the negative electrode that is connected to battery respectively and anode two through holes (a, b), and described base plate is provided with respectively and corresponding combination member of the through hole of described PCM and through hole (c), and
Wherein, when described PCM placed on the described base plate, described combination member passed described through hole (a), and rivet passes described through hole (b) and described through hole (c).
14. cover body assembly as claimed in claim 13, wherein said combination member protrudes from described base plate, the length of protrusion during with the through hole (a) that passes described base plate when described rivet the spacing between described PCM and the base plate corresponding.
15. a battery pack, it is configured to following structure,, is attached to the open upper end of the battery container that comprises electrode assemblie as each described cover body assembly in the claim 1 to 14 that is.
16. battery pack as claimed in claim 15, wherein said battery container are the prismatic metal containers.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050127545 | 2005-12-22 | ||
| KR10-2005-0127545 | 2005-12-22 | ||
| KR1020050127545A KR100861714B1 (en) | 2005-12-22 | 2005-12-22 | No-welding Type Battery Pack Using Rivet |
| KR1020060004728 | 2006-01-17 | ||
| KR10-2006-0004728 | 2006-01-17 | ||
| KR1020060004728A KR100821858B1 (en) | 2006-01-17 | 2006-01-17 | No-welding Inserting Type Battery Pack |
| KR10-2006-0013569 | 2006-02-13 | ||
| KR1020060013569A KR100930473B1 (en) | 2006-02-13 | 2006-02-13 | Battery-free battery pack using interference fit rivets |
| KR1020060013569 | 2006-02-13 | ||
| PCT/KR2006/005509 WO2007073066A1 (en) | 2005-12-22 | 2006-12-18 | No-welding type battery pack using forced-inserting type rivet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101341609A true CN101341609A (en) | 2009-01-07 |
| CN101341609B CN101341609B (en) | 2010-07-21 |
Family
ID=38365467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800484770A Active CN101341609B (en) | 2005-12-22 | 2006-12-18 | No-welding type battery pack using forced-inserting type rivet |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100861714B1 (en) |
| CN (1) | CN101341609B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044651A (en) * | 2009-10-12 | 2011-05-04 | 三星Sdi株式会社 | Battery pack |
| CN102412413A (en) * | 2011-09-27 | 2012-04-11 | 丁振荣 | Lithium battery, and its cover board, battery core, protection circuit board as well as assembly method |
| CN103797617A (en) * | 2011-10-25 | 2014-05-14 | 株式会社Lg化学 | Top cap assembly having novel structure |
| CN104282856A (en) * | 2013-07-08 | 2015-01-14 | 国家电网公司 | Battery box of electric automobile |
| CN110114900A (en) * | 2016-11-02 | 2019-08-09 | 罗伯特·博世有限公司 | Energy storage device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100930473B1 (en) * | 2006-02-13 | 2009-12-09 | 주식회사 엘지화학 | Battery-free battery pack using interference fit rivets |
| KR100971339B1 (en) | 2008-04-18 | 2010-07-20 | 삼성에스디아이 주식회사 | Battery pack |
| KR100965684B1 (en) | 2008-06-03 | 2010-06-24 | 삼성에스디아이 주식회사 | Battery Pack |
| US9130224B2 (en) | 2009-07-06 | 2015-09-08 | Samsung Sdi Co., Ltd. | Battery pack and method of manufacturing battery pack |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100274889B1 (en) * | 1998-05-08 | 2001-02-01 | 김순택 | Cab assembly of prismatic secondary battery |
| WO2000059064A1 (en) * | 1999-03-30 | 2000-10-05 | Matsushita Electric Industrial Co., Ltd. | Rechargeable battery with protective circuit |
| KR20040015314A (en) * | 2004-01-28 | 2004-02-18 | 임승준 | Non-Welding Contact Typed Battery Pack |
-
2005
- 2005-12-22 KR KR1020050127545A patent/KR100861714B1/en active IP Right Grant
-
2006
- 2006-12-18 CN CN2006800484770A patent/CN101341609B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044651A (en) * | 2009-10-12 | 2011-05-04 | 三星Sdi株式会社 | Battery pack |
| US9263724B2 (en) | 2009-10-12 | 2016-02-16 | Samsung Sdi Co., Ltd. | Battery pack |
| CN102412413A (en) * | 2011-09-27 | 2012-04-11 | 丁振荣 | Lithium battery, and its cover board, battery core, protection circuit board as well as assembly method |
| CN102412413B (en) * | 2011-09-27 | 2015-02-11 | 丁振荣 | Lithium battery, and its cover board, battery core, protection circuit board as well as assembly method |
| CN103797617A (en) * | 2011-10-25 | 2014-05-14 | 株式会社Lg化学 | Top cap assembly having novel structure |
| CN104282856A (en) * | 2013-07-08 | 2015-01-14 | 国家电网公司 | Battery box of electric automobile |
| CN110114900A (en) * | 2016-11-02 | 2019-08-09 | 罗伯特·博世有限公司 | Energy storage device |
| CN110114900B (en) * | 2016-11-02 | 2022-06-17 | 罗伯特·博世有限公司 | Energy storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100861714B1 (en) | 2008-10-06 |
| KR20070066407A (en) | 2007-06-27 |
| CN101341609B (en) | 2010-07-21 |
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Effective date of registration: 20211130 Address after: Seoul, South Kerean Patentee after: LG Energy Solution,Ltd. Address before: Seoul, South Kerean Patentee before: LG CHEM, Ltd. |
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